Age years | 44.64±13.44 (25–74) | 43.85±13.04 (25–74) | 45.57±13.85 (25–74) |
Body mass index kg·m−2 | 24.68±4.32 (12.59–53.58) | 24.15±4.71 (12.58–53.58) | 25.31±3.71 (14.42–46.95) |
Charlson's Comorbidity Index Score# | 0.06±0.32 (0–7.00) | 0.05±0.29 (0–6.00) | 0.08±0.35 (0–7.00) |
FEV1 | 3.02±0.84 (0.36–6.16) | 2.64±0.58 (0.68–4.97) | 3.47±0.89 (0.36–6.16) |
% predicted FEV1 | 91.04±16.26 (12.06–195.71) | 92.24±15.72 (31.22–195.71) | 89.62±16.78 (12.06–184.88) |
Baseline FEV1/FVC <0.7 | 431 (14.27) | 149 (9.07) | 282 (20.46) |
White race | 2803 (92.81) | 1526 (92.94) | 1277 (92.67) |
At least high school education | 2569 (85.07) | 1451 (88.37) | 1118 (81.13) |
Ever-smoker¶ | 1814 (60.07) | 815 (49.63) | 999 (72.50) |
Physically inactive+ | 232 (7.68) | 117 (7.13) | 115 (8.35) |
Currently married | 2492 (82.52) | 1308 (79.66) | 1184 (85.92) |
Drinking frequency (alcohol) |
Four or less alcoholic drinks in month | 2099 (69.50) | 1298 (79.05) | 801 (58.13) |
More than four alcoholic drinks in month | 921 (30.50) | 344 (20.95) | 577 (41.87) |
Total | 3020 (100) | 1642 (100) | 1378 (100) |